package com.guancloud.pinionshop.common;

import java.awt.Color;
import java.awt.Font;

import com.octo.captcha.component.image.backgroundgenerator.BackgroundGenerator;
import com.octo.captcha.component.image.backgroundgenerator.FileReaderRandomBackgroundGenerator;
import com.octo.captcha.component.image.color.RandomListColorGenerator;
import com.octo.captcha.component.image.fontgenerator.FontGenerator;
import com.octo.captcha.component.image.fontgenerator.RandomFontGenerator;
import com.octo.captcha.component.image.textpaster.DecoratedRandomTextPaster;
import com.octo.captcha.component.image.textpaster.TextPaster;
import com.octo.captcha.component.image.textpaster.textdecorator.TextDecorator;
import com.octo.captcha.component.image.wordtoimage.ComposedWordToImage;
import com.octo.captcha.component.image.wordtoimage.WordToImage;
import com.octo.captcha.component.word.wordgenerator.RandomWordGenerator;
import com.octo.captcha.component.word.wordgenerator.WordGenerator;
import com.octo.captcha.engine.image.ListImageCaptchaEngine;
import com.octo.captcha.image.gimpy.GimpyFactory;

/**
 * User: guan.yunhao
 * Date: 13-2-16
 */

public class JCaptchaEngine extends ListImageCaptchaEngine {

    public static final String IMAGE_CAPTCHA_KEY = "imageCaptcha";// ImageCaptcha对象存放在Session中的key
    public static final String CAPTCHA_INPUT_NAME = "j_captcha";// 验证码输入表单名称
    public static final String CAPTCHA_IMAGE_URL = "/captcha.jpg";// 验证码图片URL
    private static final Integer MIN_WORD_LENGTH = 4;// 验证码最小长度
    private static final Integer MAX_WORD_LENGTH = 4;// 验证码最大长度
    private static final Integer IMAGE_HEIGHT = 28;// 验证码图片高度
    private static final Integer IMAGE_WIDTH = 80;// 验证码图片宽度
    private static final Integer MIN_FONT_SIZE = 16;// 验证码最小字体
    private static final Integer MAX_FONT_SIZE = 16;// 验证码最大字体
    private static final String RANDOM_WORD = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";// 随机字符
    private static final String IMAGE_PATH = "./com/guancloud/pinionshop/captcha";// 随机背景图片路径

    // 验证码随机字体
    private static final Font[] RANDOM_FONT = new Font[] {
            new Font("nyala", Font.BOLD, MIN_FONT_SIZE),
            new Font("Arial", Font.BOLD, MIN_FONT_SIZE),
            new Font("Bell MT", Font.BOLD, MIN_FONT_SIZE),
            new Font("Credit valley", Font.BOLD, MIN_FONT_SIZE),
            new Font("Impact", Font.BOLD, MIN_FONT_SIZE)
    };

    // 验证码随机颜色
    private static final Color[] RANDOM_COLOR = new Color[] {
            new Color(255, 255, 255),
            new Color(255, 220, 220),
            new Color(220, 255, 255),
            new Color(220, 220, 255),
            new Color(255, 255, 220),
            new Color(220, 255, 220)
    };

    // 生成验证码
    @Override
    protected void buildInitialFactories() {

        RandomListColorGenerator randomListColorGenerator = new RandomListColorGenerator(RANDOM_COLOR);

        BackgroundGenerator backgroundGenerator = new FileReaderRandomBackgroundGenerator(IMAGE_WIDTH, IMAGE_HEIGHT, IMAGE_PATH);

        WordGenerator wordGenerator = new RandomWordGenerator(RANDOM_WORD);

        FontGenerator fontGenerator = new RandomFontGenerator(MIN_FONT_SIZE, MAX_FONT_SIZE, RANDOM_FONT);

        TextDecorator[] textDecorator = new TextDecorator[] {};

        TextPaster textPaster = new DecoratedRandomTextPaster(MIN_WORD_LENGTH, MAX_WORD_LENGTH, randomListColorGenerator, textDecorator);

        WordToImage wordToImage = new ComposedWordToImage(fontGenerator, backgroundGenerator, textPaster);

        addFactory(new GimpyFactory(wordGenerator, wordToImage));
    }

}
